A US woman who shot and killed her husband and two adult children before taking her own life is thought to have committed the shocking crime as a result of being ostracised from the religion she was raised in.

A federal judge sentenced a former Arkansas judge Wednesday to five years in prison — a stiffer punishment than prosecutors recommended — after he admitted giving young male defendants lighter sentences in return for personal benefits that included sexual favours.

Every time I tell a mate I’m doing a story on cryptocurrency, they invariably ask me the same two questions: should they invest their own hard-earned money, and which cryptocurrency will get them a Lamborghini/yacht/island quickest?

In a 60 Minutes online exclusive, reporter Liz Hayes quizzed Australian Prime Minister Malcolm Turnbull on his relationship with the unpredictable Twitter aficionado and US president Donald Trump ahead of their meeting at the White House Friday.

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Mr Rudd came in as the third choice, with 26 per cent wanting him to return as Labor's leader.

With this the final parliamentary fortnight before the May budget, Labor backbenchers are expected to raise the issue of increasing the Newstart allowance during the partyroom meeting.

Community sector lobby groups have called for a $50-a-week increase as well as a boost in work incentives.

There is also expected to be caucus discussion on 457 temporary work visas - a hot topic during Ms Gillard's western Sydney sojourn.

Some MPs say the program is good for economic growth and shouldn't be talked down while others back the prime minister in cracking down on rorts.

In the chambers, debate on the national disability insurance scheme is expected to wrap up in the House of Representatives.

It should pass easily with the opposition indicating it will support the legislation.

The Senate will be looking at the recognition act for indigenous people and legislation to beef up the sports anti-doping authority's powers in the wake of the Australian Crime Commission revelations of drug use across sporting codes.